HEMTT wheels on FMTV?

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metalman99

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I've got a M1088a1 and would like to look into putting HEMTT wheels on to widen the stance. I think I'll pick up about 3" per side which should put it right under 102". I could be off with the dims, it's been a while since I measured it.

If it requires any machining, etc. I can do all of that at my shop.

Has anyone done this?
 

brianhk91

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Did you ever mount the HEMTT wheels on your FMTV? Where any modifications necessary? If so any tire rub issues and what size tires did you run? Anyone else have experience with this?

Thanks
 

Kbarnes0

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HEMTT WHEELS. Bringing this back up to see if anyone has experience with it.

I recently purchased some Goodyear AT-3A 16R20.

I read lots of posts for rim use on the other trucks and didn't see much for comments for use on FMTV'S

Most common looks like, stud length, rim centering style, lug nut style.
I'm hoping to use the offset to retain full steer, lock to lock.

1) HEMTT wheels on FMTV?

2) Will the CTIS still be compatible? Even with slight modification? ( I'm still learning this system and how the air moves through the axle to the tire)

3) I noticed the tires are approved for up to 12" wide rim. Is there factory military rims that wide? With CTIS? Was thinking this width would help some with tire height clearance between the rear tandems. Although I've seen they clear but are very close.

Thanks to all.
 

simp5782

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You are going to rub in the front no matter what you do. You would need to make the ctis compatible
 

Reworked LMTV

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I've got a M1088a1 and would like to look into putting HEMTT wheels on to widen the stance. I think I'll pick up about 3" per side which should put it right under 102". I could be off with the dims, it's been a while since I measured it.

If it requires any machining, etc. I can do all of that at my shop.

Has anyone done this?
I know it may look good, but is it really worth all the effort and rub?
 

Kbarnes0

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Tacoma WA
I know it may look good, but is it really worth all the effort and rub?
By rub, do you mean, due to the diameter with the 16s? Or on turning, which is what I believe would be avoided with the HEMTT wheels with less back spacing.

Others with FMTV wheels and 16s have spoke of making wheel spacers, although I believe they just run them with rubbing.

Trying to gauge the work, offset benifit. Since I will need to mount the tires anyway.
 

Reworked LMTV

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By rub, do you mean, due to the diameter with the 16s? Or on turning, which is what I believe would be avoided with the HEMTT wheels with less back spacing.

Others with FMTV wheels and 16s have spoke of making wheel spacers, although I believe they just run them with rubbing.

Trying to gauge the work, offset benifit. Since I will need to mount the tires anyway.
Turning. It may work fine. Just keep in mind that spacers put additional stress on the hub and components.
 

Kbarnes0

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Tacoma WA
So do wheels with less backspace.
Installing a HEMTT wheel would be like running a 2-1/2" spacer behind the original wheel.

I like the idea of getting that spacing with a rim and back spacing, rather than a spacer. Especially that size on a larger rig.

Im curious, of stud length and lugnut style required.

And CTIS hardware.

It doesn't sound like it's far off from being done.
 

simp5782

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I like the idea of getting that spacing with a rim and back spacing, rather than a spacer. Especially that size on a larger rig.

Im curious, of stud length and lugnut style required.

And CTIS hardware.

It doesn't sound like it's far off from being done.
I can put one on an LMTV tomorrow. I've got a 395 on a hemtt wheel laying next to the truck
 

Kbarnes0

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I can put one on an LMTV tomorrow. I've got a 395 on a hemtt wheel laying next to the truck

Very cool. Appreciate it. When (if it gets the green light) I get mine on I'll get some info on the forums for all. I'll get the overall height and see what cruise/rpm change it is.

Im going to search the TM's to see how the air routes through the axle, hub and to the rim tire.

Learning more each day. Getting drawn in more each day.
 

simp5782

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Very cool. Appreciate it. When (if it gets the green light) I get mine on I'll get some info on the forums for all. I'll get the overall height and see what cruise/rpm change it is.

Im going to search the TM's to see how the air routes through the axle, hub and to the rim tire.

Learning more each day. Getting drawn in more each day.
Exits the tire thru the oversized lug/stud assembly. Would be easy enough to make the ctis work if you have any knowledge of jic, inverted flare fittings
 

Kbarnes0

Member
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Location
Tacoma WA
Got the tires today. I had the same feeling when the truck showed up. " Whoa, This is much bigger than I expected" 😁

Hoping to find some more info on the HEMTT rims.

I've been happy with the ride of the old tires. Hoping to get the same if better with these. Looking at doing the antifreeze balance.

Also will be checking shocks to see what shape they are in. Looking at the Monroe Class 8, or the Rancho adjustable.

I've tried searching, due the HEMTT rims ever come up with multiples at auction?
Seems like some of that stuff is listed by part number. I haven't quite got proficient at that system yet.

@simp5782 not sure if still available to look at the general fitment with the rim with the 395 is available. Stud length, lugnut requirements?

Do you happen to have 7, if it looks good?
 

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